At which site along this stream would a point bar form?
A) A
B) B
C) C
D) D
B) B
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Magnetic poles cannot be
A. isolated. B. located. C. destroyed. D. none of the above
Which of the following does not describe a nuclear fission reaction?
A) The number of nucleons in the products is different from the number of nucleons in the starting material. B) The mass of the products is less than the mass of the reactants. C) The energy released is proportional to the mass difference in the system. D) All of the above describe a fusion reaction. E) None of the above describe a fusion reaction.
One of greatest threats from an explosion of Mount Rainier is mudflows in populated areas
a. True b. False
Which of the following is not an example of an abiotic component of an ecosystem?
A) mineral nutrients B) precipitation C) plants D) sunlight E) atmospheric gases